- National Institutes of Health
- National Investment Center for Seniors Housing & Care
- National Investment Center for Seniors Housing and Care
- National Investment Centers for
- National Nurses United
- National Opinion Resource Center
- National Partnership for Healthcare and Hospice Innovation
- National Poll on Healthy Aging
- National Rural Health Association
- National Senior Service Corps.
- Nationwide Healthcare
- Nationwide Healthcare Services
- Nature Trail Rehabilitation and Healthcare Center
- Navigator Elder Homes of New England
- Navigator Homes
- NaviHealth
- Nazareth Home
- NBC News
- NCAL
- NCLER